Description Summary
Tesorion describes Lorenz as a ransomware with design and implementation flaws, leading to impossible decryption with tools provided by the attackers. A free decryptor for 2021 versions was made available via the NoMoreRansom initiative. A new version of the malware was discovered in March 2022, for which again was provided a free decryptor, while the ransomware operators are not able to provide tools to decrypt affected files.
Threat Actor
Operator/affiliate cluster behind the Lorenz leak site. Detailed actor attribution is not available in curated public reporting.
Technical Indicators
Encryption Extension
Not publicly reported
Encryption Algorithm
Not publicly reported
Ransom Note Name
Not publicly reported
Targeted Industries
Cross-sector (per leak-site victim telemetry)
First Seen
Unknown
Last Seen
No public victim disclosures observed
Geographical Location
Global / not publicly profiled
MITRE ATT&CK Matrix
| Tactic | TTP | Technique Name |
|---|---|---|
| Impact x 2 | T1486 | Data Encrypted for Impact |
| T1490 | Inhibit System Recovery | |
| Exfiltration x 1 | T1567 | Exfiltration Over Web Service (leak site) |
| Initial Access x 2 | T1190 | Exploit Public-Facing Application |
| T1078 | Valid Accounts |